KR20050043569A - Protection gainst heat several layer insulated wire - Google Patents

Abstract

The present invention can easily release high temperature heat generated from an insulated wire to give a feeling of familiarity to portable electronic products, and also to prevent the occurrence of fire by easily releasing high heat generated in commercial voltage or industrial electronic products. A heat dissipation multilayer insulated wire having improved heat dissipation characteristics by adding a heat dissipation filler having excellent heat dissipation performance to a resin having excellent wear resistance and electrical insulation.

The heat dissipating multilayer insulated wire 50 is a first insulation that is extruded and insulated from a conductor 10 such as copper or an alloy wire, and a polymer resin compounded with aluminum nitride, alumina or magnesium oxide, which is a heat dissipation filler, on the conductor 10. The insulating coating layer 20 and the second insulating coating layer 30 and the outer coating layer 40 extruded and insulated with a heat resistant polymer resin compounded with the heat dissipating filler on the second insulating coating layer 30.

In addition, the polymer resin, polyurethane elastomer, polyethylene terephthalate / polybutylene terephthalate alloy, polyethylene terephthalate / polyethylene naphthalene dicarboxylate, polyether sulfone / polycarbonate alloy, ethylene tetrafluoroethylene, poly One of ether ether ketone and thermoplastic polyester resin is selected and configured to be extrusion-insulated.

In addition, the heat-resistant polymer resin is configured to be extruded insulation by selecting any one of polyamide, ethylene tetrafluoroethylene, polyether ether ketone, polyimide resin.

Description

Protection gainst heat several layer insulated wire

The present invention relates to a heat dissipation multilayer insulated wire, and more particularly, to an insulation coating layer formed of two or more layers by extrusion insulation with a polymer resin compounded with aluminum nitride, alumina or magnesium oxide, which is a heat dissipation filler, on a conductor. The insulation coating layer is extruded and insulated with a heat-resistant polymer compounded with a heat dissipating filler to form an outer coating layer. In addition, the present invention relates to a heat dissipated multilayer insulated wire that prevents fire by easily discharging high heat generated in commercial voltage or industrial electronic products.

Recently, electric and electronic equipment using high-frequency electronics and high frequency are becoming smaller and lighter, and home appliances such as computers, mobile phones, monitors, printers, and video cameras, which are commonly used in daily life, are becoming smaller and faster. As home appliances become smaller and lighter, the amount of heat generated by the use of electricity increases sharply, causing heat dissipation so that heat is not concentrated. As these electronic products become smaller, insulated wires used for internal wiring also become thinner, and heat generation generated per unit area increases, requiring high heat resistance and insulation properties, and a function for quickly dissipating heat generated when current flows. It became necessary.

Polymer resins such as polyester, polyamide, polyether sulfone, and polyetherimide, which are used as insulating coating materials of conventional multilayer insulated wires, have excellent heat resistance, electrical insulation and mechanical strength, but have low thermal conductivity to easily conduct heat generated from conductors. Due to the disadvantage that it can not be discharged was a situation that there is a risk of fire caused by high heat generated during overvoltage.

The present invention has been made in view of the above problems, and the object thereof is to easily release high temperature heat generated from an insulated wire, thereby providing a feeling of familiarity to portable electronic products, as well as high temperature generated in commercial voltage or industrial electronic products. It is to provide a heat dissipation multilayer insulated wire that can prevent fire by releasing easily.

The present invention for achieving the above object, the first insulating coating layer and the second insulating coating layer and a conductor, such as copper or alloy wire, and a polymer resin compounded with a heat dissipating agent aluminum nitride, alumina, magnesium oxide resin An insulating coating layer and an outer coating layer extruded and insulated with a polymer resin compounded with the heat dissipation filler.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

1 to 2 are views showing the overall configuration of the present invention, reference numeral 50 denotes a heat dissipation multilayer insulation wire of the present invention.

The heat dissipation multilayer electrothermal wire 50 includes a conductor 10, a first insulating coating layer 20, a second insulating coating layer 30, and an outer coating layer 40.

The conductor 10 is made of copper or a metal alloy wire.

The first insulating coating layer 20 and the second coating layer 30 are compounded on the conductor 10 with 0.1 wt% to 40 wt% of aluminum nitride, alumina or magnesium oxide, which are heat dissipating fillers, in the polymer resin. Extrude and insulate more than one layer.

In this case, the first insulating coating layer 20 is extrusion-insulated on the conductor 10, and the second insulating coating layer 30 is extrusion-insulated onto the first insulating coating layer 20.

The polymer resin, polyurethane elastomer, polyethylene terephthalate / polybutylene terephthalate alloy, polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy, polyether sulfone / polycarbonate alloy, ethylene tetrafluoroethylene, polyether One of ether ketone and thermoplastic polyester resin is selected and used.

Here, in the polymer resin, the polyethylene terephthalate / polybutylene terephthalate alloy resin may include an alloy resin containing 1 wt% to 40 wt% polybutylene terephthalate, and polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy resin. The alloy resin containing 1 to 90 weight% of polyethylene naphthalenedicarboxylate, and the polyether sulfone / polycarbonate alloy resin can use the alloy resin containing 1 to 50 weight% of polycarbonate.

In the polymer resin, the polyethylene terephthalate / polybutylene terephthalate alloy resin may include a blend resin containing 1 wt% to 40 wt% polybutylene terephthalate, and polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy resin. The blend resin containing 1 to 90 weight% of polyethylene naphthalenedicarboxylate and the polyether sulfone / polycarbonate alloy resin can use the blend resin containing 1 to 50 weight% of polycarbonate.

The outer coating layer 40 is extruded and insulated on the second insulating coating layer 30, and is insulated with a heat-resistant polymer resin compounded with a heat dissipating filler of aluminum nitride, alumina or magnesium oxide.

The heat-resistant polymer resin is selected from polyamide, ethylene tetrafluoroethylene, polyether ether ketone, and polyimide resin.

In addition, the polyamide resin is extrusion molded by selecting any one of nylon 6, nylon 6,6 or nylon 6,10.

Based on the embodiment of the present invention as described above in more detail as follows.

Table 1 shows the thermal conductivity of the polymer resin used for the first insulating coating layer and the second insulating coating layer.

Thermal Conductivity of Polymer Resin material Thermal conductivity ^{(W · m -1 · K -1} , 23 ℃) Polyethylene terephthalate 0.15-0.4 Nylon 66 0.25 Polytetrafluoroethylene 0.24 Ethylene Tetrafluoroethylene 0.24 Polyethersulfone 0.13 ~ 0.18 Polyetherimide 0.22

Table 2 shows the thermal conductivity of the resin used as a heat radiation filler.

Thermal Conductivity of Heat Resistant Filler material Thermal conductivity ^{(W · m -1 · K -1} , 23 ℃) Aluminum Nitride 200 Alumina  39 Magnesium oxide  38

The performance of the heat dissipated multilayer electric wires prepared in Tables 3, 4, and 5 is evaluated by dielectric breakdown voltage, solderability, thermal conductivity, and flame retardancy test.

division Example Floor Each layer insulation material One 2 3 Polymer resin Polyurethane Elastomer 90 80 80 First insulation coating layer Aluminum Nitride 10 - - Heat Resistant Filler Alumina - 20 - Magnesium oxide - - 20 1st layer insulation thickness (㎛) 33 33 33 Polymer resin Polyurethane Elastomer 90 80 80 Second insulation coating layer Aluminum Nitride 10 - - Heat Resistant Filler Alumina - 20 - Magnesium oxide - 20 Second layer insulation thickness (㎛) 33 33 33 Heat Resistant Polymer Resin Polyamide 70 70 70 Outer coating layer Aluminum Nitride 30 - - Heat Resistant Filler Alumina - 30 - Magnesium oxide - - 30 Outer coating layer insulation thickness (㎛) 33 33 33 Flame retardant V-2 V-2 V-2 Thermal conductivity ^{(W · m -1 · K -1} , 23 ℃) 5 2 2 Solderability 0 0 0 Insulation Breakdown Voltage (KV) 16.2 15.5 14.5 Heat resistance grade (Class A, 105 ℃ class) pass pass pass

division Example Floor Each layer insulation material 4 5 6 7 8 9 10 First insulation coating layer Polymer resin Polyethylene Terephthalate / Polybutylene Terephthalate Alloy 90 80 80 - - - 80 Polyethylene terephthalate / polyethylene naphthalenedicarboxylate alloy - - - 90 80 80 - Aluminum Nitride 10 - - 10 - - - Heat Resistant Filler Alumina - 20 - - 20 - - Magnesium oxide - - 20 - - 20 20 1st layer insulation thickness (㎛) 33 33 33 33 33 33 33 Second insulation coating layer Polymer resin Polyethylene Terephthalate / Polybutylene Terephthalate Alloy 90 80 80 - - - 80 Polyethylene terephthalate / polyethylene naphthalenedicarboxylate alloy - - - 90 80 80 - Aluminum Nitride 10 - - 10 - - - Heat Resistant Filler Alumina - 20 - - 20 - - Magnesium oxide - - 20 - - 20 20 Second layer insulation thickness (㎛) 33 33 33 33 33 33 33 Outer coating layer Heat Resistant Polymer Resin Polyamide 70 70 70 70 70 70 - Ethylene Tetrafluoroethylene - - - - - - 70 Aluminum Nitride 30 - - 30 - - - Heat Resistant Filler Alumina - 30 - - 30 - - Magnesium oxide - - 30 - - 30 30 Outer coating insulation thickness (㎛) 33 33 33 33 33 33 33 Flame retardant V-2 V-2 V-2 V-2 V-2 V-2 V-2 Thermal conductivity ^{(W · m -1 · K -1} , 23 ℃) 5 2 2 5 2 2 2 Solderability 0 0 0 0 0 0 x Insulation Breakdown Voltage (KV) 16.2 15.5 14.5 16.2 15.5 14.5 14.5 Heat resistance grade (Class B, 130 ℃) pass pass pass pass pass pass pass

division Example Floor Each layer insulation material 11 12 13 14 15 16 First insulation coating layer Polymer resin Polyethersulfone / Polycarbonate Alloy 90 - - - - - Polyethylene terephthalate / polyethylene naphthalenedicarboxylate alloy - 80 - - - - Ethylene Tetrafluoroethylene - - 80 - - - Polyether ether ketone - - - 100 - - Thermoplastic Polyester - - - - 100 90 Aluminum Nitride 10 - - - 10 Heat Resistant Filler Alumina - 20 - - - - Magnesium oxide - - 20 - - 1st layer insulation thickness (㎛) 33 33 33 33 33 33 Second insulation coating layer Polymer resin Polyethersulfone / Polycarbonate Alloy 90 - 80 - Polyethylene terephthalate / polyethylene naphthalenedicarboxylate alloy - 80 - - - - Ethylene Tetrafluoroethylene - - - - - Polyether ether ketone - - - 100 80 90 Thermoplastic Polyester Aluminum Nitride 10 - - - - 10 Heat Resistant Filler Alumina - 20 - - 20 - Magnesium oxide - - 20 - - - Second layer insulation thickness (㎛) 33 33 33 33 33 33 Outer coating layer Heat Resistant Polymer Resin Polyamide 70 70 - - - - Ethylene Tetrafluoroethylene - - 70 - - - Polyether ether ketone - - - - 70 - Thermoplastic imide 70 70 Aluminum Nitride 30 - - 30 30 30 Heat Resistant Filler Alumina - 30 - - - Magnesium oxide - - 30 - - - Outer coating insulation thickness (㎛) 33 33 33 33 33 33 Flame retardant V-2 V-2 V-1 V-1 V-1 V-0 Thermal conductivity ^{(W · m -1 · K -1} , 23 ℃) 5 3 2 One 2 5 Solderability 0 0   x   x   x   x Insulation Breakdown Voltage (KV) 16.2 15.5 14.5 16.2 15.5 14.5 Heat resistance grade Class F, 150 ℃ pass pass pass pass pass pass N class 200 ℃ fail fail fail pass pass pass

In the extrusion coating described in the above table, the cylinder temperature was 160 to 360 ° C., the screw rotation speed was controlled to 20 to 30 rpm, and the line speed was 100 to 500 rpm to extrude insulation to prevent eccentricity.

The flame retardant test was measured according to the test method of the Horizontal Test Method (UL 94HB) using a flame retardant tester, and classified into V-0, V-1, and V-2 according to the flame retardancy.

Solderability is defined by taking 34 specimens of approximately 15 cm in length from the same bobbin as specified in clause 16 of KS C 3006 and maintaining the specified temperature for each of approximately 40 mm at the front end of the specimen in 50 Sn specified in KSD 6704. It was judged whether the solder was evenly removed except for about 10 mm of the upper part of the contained part when soaked and then removed and immediately wiped with a suitable cloth.

The breakdown voltage was measured by two-wire twisting method. Take three specimens of about 50cm in length from the same bobbin, fold them together in two pieces, and twist the parts of about 12cm in length with appropriate twisting force while applying the appropriate tension. After removing the tensile force, the folded part was cut and measured by applying an alternating voltage close to the sine wave of 60㎐. If the insulation breakdown voltage was lower than 14kV, the highest experimental value used in the transformer, it failed.

In the said table, "-" means not adding, and the compounding of resin which is each layer insulation material of each table | surface is shown by weight part.

Examples 1-3

Extrude and insulate a first insulating coating layer 20 compounded with a polyurethane heat-resistant filler aluminum nitride, alumina, and magnesium oxide resin on a conductor 10 such as copper or an alloy wire, and the first insulation The second insulating coating layer 30 of the same material as the first insulating coating layer 20 is extrusion-insulated onto the coating layer 20.

Then, the heat insulating multilayer insulation wire having the outer coating layer 40 formed by extruding and insulating the polyamide resin compounded with the heat dissipating filler to the outer peripheral surface of the second insulating coating layer 30.

Examples 4-10

         On the conductor 10 such as copper or alloy wire, a polyethylene terephthalate / polybutylene terephthalate alloy resin or a polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy resin is used as a heat dissipating agent such as aluminum nitride, alumina, and magnesium oxide resin. Any one of the compounded resins is selected and extruded into the first insulating coating layer 20 and the second insulating coating layer 30 in two or more layers.

Then, one of polyamide resin and ethylene tetrafluoroethylene resin having a heat dissipation filler compounded therein is selected as an outer circumferential surface of the second insulating coating layer 30 and is extruded and insulated into the outer coating layer 40 to radiate a multi-layered insulation wire. To prepare.

At this time, the polyethylene terephthalate / polybutylene terephthalate alloy resin is used by extruding into an alloy or blended resin containing 1% to 40% by weight of polybutylene terephthalate.

Examples 11-16

Heat-resistant filler for polyether sulfone / polycarbonate alloy, polyethylene terephthalate / polyethylene naphthalenedicarboxylate alloy, ethylene tetrafluoroethylene, polyether ether ketone, and thermoplastic polyester resin on the outer circumferential surface of conductor 10 such as copper or alloy wire One of the resins containing phosphorus aluminum nitride, alumina, and magnesium oxide resin is selected, and two or more layers are extruded and insulated into the first insulating coating layer 20 and the second insulating coating layer 30.

Then, any one of polyamide, ethylene tetrafluoroethylene, polyether ether ketone, and a resin in which a heat dissipating agent is compounded in a thermoplastic imide resin is selected as an outer circumferential surface of the second insulating coating layer 30. Extruded insulation to produce a heat dissipation multilayer insulated wire.

As shown in the above embodiment, it can be seen that the heat dissipation characteristics of the multi-layered insulated wire extruded by compounding with aluminum nitride, alumina, and magnesium oxide resin increased by more than 10 times, and the flame retardancy was also increased.

As described above, the present invention forms an insulating coating layer of at least two layers of extrusion insulation with a polymer resin compounded with aluminum nitride, alumina or magnesium oxide as a heat dissipation filler on the conductor, and the heat dissipation filler is compounded with the insulation coating layer. It is formed of an extruded insulated outer coating layer made of heat-resistant high-molecular resin, and has excellent heat resistance, abrasion resistance, and electrical insulation, and easily releases high-temperature heat generated from an insulated wire, thereby providing familiarity to portable electronic products. Easily dissipates high heat generated in electronic products to prevent fire, and has the advantage that can be applied to products that require heat dissipation such as transformers, home appliances, airplanes, cordless phones, computers.

1 is a perspective view showing the overall configuration of the present invention.

2 is a cross-sectional view of FIG.

<Explanation of symbols for the main parts of the drawings>

10: conductor 20: first insulating coating layer

30: second insulating coating layer 40: outer coating layer

50: heat dissipation multilayer insulated wire

Claims (6)

In multilayer insulated wire, Conductor 10 such as copper or alloy wire, A first insulating coating layer 20 and a second insulating coating layer 30 extruded and insulated from a polymer resin compounded with aluminum nitride, alumina or magnesium oxide as a heat dissipation filler on the conductor 10; Heat radiation multi-layered insulated wire, characterized in that consisting of an outer coating layer 40 is insulated by the heat-resistant polymer compounding the heat-insulating filler compound on the second insulating coating layer (30). The method of claim 1, The polymer resin, polyurethane elastomer, polyethylene terephthalate / polybutylene terephthalate alloy, polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy, polyether sulfone / polycarbonate alloy, ethylene tetrafluoroethylene, polyether A heat radiation multi-layered insulated wire, characterized in that configured to be extrusion insulation by selecting any one of the ether ketone, thermoplastic polyester resin. The method of claim 1, The heat-resistant polymer number is a heat-radiating multilayer insulated wire, characterized in that configured to be extruded insulation by selecting any one of polyamide resin, ethylene tetrafluoroethylene, polyether ether ketone, polyimide resin. The method of claim 2, In the polymer resin, polyethylene terephthalate / polybutylene terephthalate alloy resin is an alloy resin containing 1% by weight to 40% by weight of polybutylene terephthalate, and polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy resin is polyethylene naphthalene A heat dissipating multilayer comprising an alloy resin containing 1% by weight to 90% by weight of dicarboxylate, and a polyether sulfone / polycarbonate alloy resin containing 1% by weight to 50% by weight of polycarbonate. Insulated wire. The method of claim 3, The polyamide resin is a heat radiation multi-layered insulated wire, characterized in that extruded by selecting any one of nylon 6, nylon 6,6 or nylon 6,10. The method of claim 4, wherein The polyethylene terephthalate / polybutylene terephthalate alloy resin in the polymer resin is a blend resin containing 1% to 40% by weight of polybutylene terephthalate, polyethylene terephthalate / polyethylene naphthalene dicarboxylate alloy resin is polyethylene naphthalene A heat dissipating multilayer comprising a blend resin containing 1% by weight to 90% by weight of dicarboxylate and a blend resin containing 1% by weight to 50% by weight of polycarbonate. Insulated wire.